/*
 * Copyright (c) 2019, 2021 Oracle and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.helidon.microprofile.grpc.core;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import io.helidon.grpc.core.MarshallerSupplier;

/**
 * An annotation used to annotate a type or method to specify the
 * named marshaller supplier to use for rpc method calls.
 */
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
public @interface GrpcMarshaller {
    /**
     * Obtain the type of the {@link io.helidon.grpc.core.MarshallerSupplier} to use.
     * @return  the type of the {@link io.helidon.grpc.core.MarshallerSupplier} to use
     */
    String value() default MarshallerSupplier.DEFAULT;
}
